/*
    Created by IntelliJ IDEA.
    @Auther: gaozhe
    @Date: 2021/1/2 下午 10:19
    
*/
package com.gaozhe.dao;

import com.gaozhe.pojo.Department;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

public class DepartmentDao {


    private static Map<Integer, Department> departments = null;

    static {
        //模拟数据库中的数据
        departments = new HashMap<Integer, Department>();

        departments.put(101,new Department(101,"教学部"));
        departments.put(102,new Department(102,"市场部"));
        departments.put(103,new Department(103,"教研部"));
        departments.put(104,new Department(104,"运营部"));
        departments.put(105,new Department(105,"后勤部"));
    }

    //获取所有部门的信息
    public Collection<Department> getDepartments(){
        return departments.values();

    }
    //通过id得到部门
    public Department getDepartmentById(Integer id){
        return departments.get(id);
    }


}
